Microsoft has added Windows Server 2019 to its family of servers. Microsoft has released Windows Server 2019 Technical Preview in the Windows Insider Program.
If you are looking for where to download Windows Server 2019, visit https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewserver.
For more information about Windows Server 2019, check out the related article.
Article: Windows Server 2019
Where Can I Download Windows Server 2019?